Hi guys,
I was wondering, what happens when the thermostat does not open.  I know that the engine will overheat, but would the coolant rise in the reserve tank?  I am experiencing overheating, rising water in there reserve but no coolant loss or gas in the system.  
I don't want to change the radiator if the thermostat is the culprit.  Although the hoses are hot in the front too, which may happen either way.  
Now I need someone who knows all these.  Any of you?
I love this list.
Zoltan